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| -rw-r--r-- | modules/libjar/zipwriter/nsIZipWriter.idl | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/modules/libjar/zipwriter/nsIZipWriter.idl b/modules/libjar/zipwriter/nsIZipWriter.idl new file mode 100644 index 0000000000..9cf32fd1e7 --- /dev/null +++ b/modules/libjar/zipwriter/nsIZipWriter.idl @@ -0,0 +1,223 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#include "nsISupports.idl" +interface nsIChannel; +interface nsIInputStream; +interface nsIRequestObserver; +interface nsIFile; +interface nsIZipEntry; + +/** + * nsIZipWriter + * + * An interface for a zip archiver that can be used from script. + * + * The interface supports both a synchronous method of archiving data and a + * queueing system to allow operations to be prepared then run in sequence + * with notification after completion. + * + * Operations added to the queue do not get performed until performQueue is + * called at which point they will be performed in the order that they were + * added to the queue. + * + * Operations performed on the queue will throw any errors out to the + * observer. + * + * An attempt to perform a synchronous operation while the background queue + * is in progress will throw NS_ERROR_IN_PROGRESS. + * + * Entry names should use /'s as path separators and should not start with + * a /. + * + * It is not generally necessary to add directory entries in order to add file + * entries within them, however it is possible that some zip programs may + * experience problems what that. + */ +[scriptable, uuid(3ca10750-797e-4a22-bcfe-66170b5e96dd)] +interface nsIZipWriter : nsISupports +{ + /** + * Some predefined compression levels + */ + const uint32_t COMPRESSION_NONE = 0; + const uint32_t COMPRESSION_FASTEST = 1; + const uint32_t COMPRESSION_DEFAULT = 6; + const uint32_t COMPRESSION_BEST = 9; + + /** + * Gets or sets the comment associated with the open zip file. + * + * @throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened + */ + attribute ACString comment; + + /** + * Indicates that operations on the background queue are being performed. + */ + readonly attribute boolean inQueue; + + /** + * The file that the zipwriter is writing to. + */ + readonly attribute nsIFile file; + + /** + * Opens a zip file. + * + * @param aFile the zip file to open + * @param aIoFlags the open flags for the zip file from prio.h + * + * @throws NS_ERROR_ALREADY_INITIALIZED if a zip file is already open + * @throws NS_ERROR_INVALID_ARG if aFile is null + * @throws NS_ERROR_FILE_NOT_FOUND if aFile does not exist and flags did + * not allow for creation + * @throws NS_ERROR_FILE_CORRUPTED if the file does not contain zip markers + * @throws <other-error> on failure to open zip file (most likely corrupt + * or unsupported form) + */ + void open(in nsIFile aFile, in int32_t aIoFlags); + + /** + * Returns a nsIZipEntry describing a specified zip entry or null if there + * is no such entry in the zip file + * + * @param aZipEntry the path of the entry + */ + nsIZipEntry getEntry(in AUTF8String aZipEntry); + + /** + * Checks whether the zipfile contains an entry specified by zipEntry. + * + * @param aZipEntry the path of the entry + */ + boolean hasEntry(in AUTF8String aZipEntry); + + /** + * Adds a new directory entry to the zip file. If aZipEntry does not end with + * "/" then it will be added. + * + * @param aZipEntry the path of the directory entry + * @param aModTime the modification time of the entry in microseconds + * @param aQueue adds the operation to the background queue. Will be + * performed when processQueue is called. + * + * @throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened + * @throws NS_ERROR_FILE_ALREADY_EXISTS if the path already exists in the + * file + * @throws NS_ERROR_IN_PROGRESS if another operation is currently in progress + * @throws NS_ERROR_INVALID_ARG if aModTime is older than 1980-1-1 + */ + void addEntryDirectory(in AUTF8String aZipEntry, in PRTime aModTime, + in boolean aQueue); + + /** + * Adds a new file or directory to the zip file. If the specified file is + * a directory then this will be equivalent to a call to + * addEntryDirectory(aZipEntry, aFile.lastModifiedTime, aQueue) + * + * @param aZipEntry the path of the file entry + * @param aCompression the compression level, 0 is no compression, 9 is best + * @param aFile the file to get the data and modification time from + * @param aQueue adds the operation to the background queue. Will be + * performed when processQueue is called. + * + * @throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened + * @throws NS_ERROR_FILE_ALREADY_EXISTS if the path already exists in the zip + * @throws NS_ERROR_IN_PROGRESS if another operation is currently in progress + * @throws NS_ERROR_FILE_NOT_FOUND if file does not exist + */ + void addEntryFile(in AUTF8String aZipEntry, + in int32_t aCompression, in nsIFile aFile, + in boolean aQueue); + + /** + * Adds data from a channel to the zip file. If the operation is performed + * on the queue then the channel will be opened asynchronously, otherwise + * the channel must support being opened synchronously. + * + * @param aZipEntry the path of the file entry + * @param aModTime the modification time of the entry in microseconds + * @param aCompression the compression level, 0 is no compression, 9 is best + * @param aChannel the channel to get the data from + * @param aQueue adds the operation to the background queue. Will be + * performed when processQueue is called. + * + * @throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened + * @throws NS_ERROR_FILE_ALREADY_EXISTS if the path already exists in the zip + * @throws NS_ERROR_IN_PROGRESS if another operation is currently in progress + * @throws NS_ERROR_INVALID_ARG if aModTime is older than 1980-1-1 + */ + void addEntryChannel(in AUTF8String aZipEntry, in PRTime aModTime, + in int32_t aCompression, in nsIChannel aChannel, + in boolean aQueue); + + /** + * Adds data from an input stream to the zip file. + * + * @param aZipEntry the path of the file entry + * @param aModTime the modification time of the entry in microseconds + * @param aCompression the compression level, 0 is no compression, 9 is best + * @param aStream the input stream to get the data from + * @param aQueue adds the operation to the background queue. Will be + * performed when processQueue is called. + * + * @throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened + * @throws NS_ERROR_FILE_ALREADY_EXISTS if the path already exists in the zip + * @throws NS_ERROR_IN_PROGRESS if another operation is currently in progress + * @throws NS_ERROR_INVALID_ARG if aModTime is older than 1980-1-1 + */ + void addEntryStream(in AUTF8String aZipEntry, in PRTime aModTime, + in int32_t aCompression, in nsIInputStream aStream, + in boolean aQueue); + + /** + * Removes an existing entry from the zip file. + * + * @param aZipEntry the path of the entry to be removed + * @param aQueue adds the operation to the background queue. Will be + * performed when processQueue is called. + * + * @throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened + * @throws NS_ERROR_IN_PROGRESS if another operation is currently in progress + * @throws NS_ERROR_FILE_NOT_FOUND if no entry with the given path exists + * @throws <other-error> on failure to update the zip file + */ + void removeEntry(in AUTF8String aZipEntry, in boolean aQueue); + + /** + * Processes all queued items until complete or some error occurs. The + * observer will be notified when the first operation starts and when the + * last operation completes. Any failures will be passed to the observer. + * The zip writer will be busy until the queue is complete or some error + * halted processing of the queue early. In the event of an early failure, + * remaining items will stay in the queue and calling processQueue will + * continue. + * + * @throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened + * @throws NS_ERROR_IN_PROGRESS if the queue is already in progress + */ + void processQueue(in nsIRequestObserver aObserver, in nsISupports aContext); + + /** + * Closes the zip file. + * + * @throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened + * @throws NS_ERROR_IN_PROGRESS if another operation is currently in progress + * @throws <other-error> on failure to complete the zip file + */ + void close(); + + /** + * Make all stored(uncompressed) files align to given alignment size. + * + * @param aAlignSize is the alignment size, valid values from 2 to 32768, and + must be power of 2. + * + * @throws NS_ERROR_INVALID_ARG if aAlignSize is invalid + * @throws <other-error> on failure to update the zip file + */ + void alignStoredFiles(in uint16_t aAlignSize); +}; |